Shoe having rotating function

ABSTRACT

Provided is a shoe having a rotating function, and having a novel structure in which a coupling shaft is fixedly coupled by a coupling bolt in a state in which a rotation-preventing column of the coupling shaft is coupled to a rotation-preventing groove, such that the rotation of the coupling shaft is reliably prevented and, simultaneously, the loosening of the coupling bolt is prevented, and, furthermore, a rotating plate can be locked only with foot movements without an operation, performed by the hands, for locking the rotating plate.

BACKGROUND

The present invention relates to a shoe, and more particularly, to a shoe that has a rotating function applied to a sole to allow a wearer to twist his or her body for his or her waist exercise.

Most people who have a busy life do not spend a lot of time on their exercise, and as automobiles are widely prevailed, especially, even their walking distance for a day inclusive of commutting time is gradually decreased.

A shoe basically serves to protect a wearer's foot and to absorb impacts generated upon walking. In addition thereto, shoes having various functions have been recently shipped in the market.

Representatively, Masai walking shoes are proposed to enhance exercise effects, and further, shoes with wheels are supplied in the market.

On the other hand, conventional shoes having a rotating function are disclosed in Korean Patent Registration No. 10-0779881 entitled ‘functional shoe having rotating function’ (Dated Nov. 21, 2007) and Korean Patent Registration No. 10-1331482 entitled ‘shoe having rotating function’ (Dated Nov. 14, 2013), and such shoes have a rotating function applied to soles to allow a wearer to twist his or her body for his or her waist exercise.

The inventor is the same as of Korean Patent Registration No. 10-1331482 entitled ‘shoe having rotating function’ (Dated Nov. 14, 2013) and proposes the invention so as to improve the conventional shoe having a rotating function.

SUMMARY OF THE INVENTION

According to the conventional shoe of the inventor as disclosed in Korean Patent Registration No. 10-1331482 entitled ‘shoe having rotating function’, a bolt may be easily loosened according to the rotation of a rotating plate, and so as to solve such problem, a washer and a roller are located between the bolt and the rotating plate to prevent the rotation of the rotating plate from being applied to the bolt, so that in spite of such structural complication, it is hard to completely prevent the bolt from being loosened.

According to the conventional shoe of the inventor, further, lock means is located on an upper of the shoe so that the rotation of the rotating plate is controlled by coupling the lock means and a locking loop or by releasing the coupled state, thereby inconveniently bending a wearer's waist forward whenever the manipulations are needed.

Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a shoe having a rotating function that is capable of preventing a coupling bolt from being loosened, while having simplification in a coupling structure of the coupling bolt, and that is capable of locking a rotating plate only with a wearer's steps, without any manipulation by his or her hand.

Technical Solution

To accomplish the above-mentioned object, according to a first aspect of the present invention, there is provided a shoe having a rotating function including an upper, a sole coupled to the upper, and a rotating part located on a front side of the sole, wherein the sole includes a fastening hole formed piercedly on the front side thereof in a vertical direction, the rotating part includes: a support shaft having a flange coming into close contact with a top surface of the sole, a through column extended downwardly from the flange to pass through the fastening hole, a rotation-preventing groove concavedly formed upwardly from the bottom end of the through column, and a female screw hole formed on top of the rotation-preventing groove in a vertical direction thereof; a bearing assembly having a top end periphery supported against the underside of the sole in such a manner as to be disposed coaxially to the through column protruding downwardly from the sole; a rotating plate having a shaft hole formed on the center thereof in a vertical direction and a top surface supported against the underside end periphery of the bearing assembly; a coupling shaft having a screw through hole formed at the center thereof in a vertical direction, a rotation-preventing column inserted into the rotation-preventing groove of the support shaft, a shaft column located on the underside of the rotation-preventing column in such a manner as to be disposed in the shaft hole, and a support projection protruding radially from the underside of the shaft column to support the underside of the rotating plate thereagainst; a coupling bolt having a male screw body screw-coupled to the female screw hole after passing through the screw through hole and a bolt head adapted to support the underside of the coupling shaft thereagainst; and a first slip-preventing member coupled to the underside of the rotating plate in such a manner as to come into contact with the ground, and the sole includes a second slip-preventing member disposed on the front side of the underside thereof and having a plurality of rotation-preventing protrusions protruding downwardly therefrom in such a manner as to be insertedly contacted with the top surface of the rotating plate to prevent the rotating plate from rotating.

According to the present invention, desirably, the rotating plate has protrusion insertion grooves formed concentrically on the top surface thereof to insert the plurality of rotation-preventing protrusions thereinto.

To accomplish the above-mentioned object, according to a second aspect of the present invention, there is provided a shoe having a rotating function including an upper, a sole coupled to the upper, and a rotating part located on a front side of the sole, wherein the sole includes a rotation-preventing groove concavedly formed upwardly from the underside of the front side of the sole and a female screw hole formed on top of the rotation-preventing groove in a vertical direction, the rotating part includes: a bearing assembly having a top end periphery coming into contact with the underside of the sole in such a manner as to be disposed coaxially to the rotation-preventing groove of the sole; a rotating plate having a shaft hole formed on the center thereof in a vertical direction and a top surface supported against the underside end periphery of the bearing assembly; a coupling shaft having a screw through hole formed at the center thereof in a vertical direction, a rotation-preventing column inserted into the rotation-preventing groove, a shaft column located on the underside of the rotation-preventing column in such a manner as to be disposed in the shaft hole, and a support projection protruding radially from the shaft column to support the underside of the rotating plate thereagainst; a coupling bolt having a male screw body screw-coupled to the female screw hole after passing through the screw through hole and a bolt head adapted to support the underside of the coupling shaft thereagainst; and a first slip-preventing member coupled to the underside of the rotating plate in such a manner as to come into contact with the ground, and the sole includes a second slip-preventing member disposed on the front side of the underside thereof and having a plurality of rotation-preventing protrusions protruding downwardly therefrom in such a manner as to be insertedly contacted with the top surface of the rotating plate to prevent the rotating plate from rotating.

According to the present invention, desirably, the rotating plate has protrusion insertion grooves formed concentrically on the top surface thereof to insert the plurality of rotation-preventing protrusions thereinto.

Advantageous Effects

According to the present invention, the shoe having a rotating function is configured to have the rotation-preventing column of the coupling shaft coupled to the rotation-preventing groove to allow the coupling bolt to be fixedly coupled to the coupling shaft, thereby reliably preventing the coupling bolt from rotating, and to have the rotating plate locked only with the wearer's steps, without any manipulation by his or her hand, thereby easily locking the rotating plate.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view showing a shoe having a rotating function according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the shoe of FIG. 1 from which an upper is removed.

FIG. 3 is a perspective view showing the underside of the shoe of FIG. 2.

FIG. 4 is a separate perspective view of FIG. 2.

FIG. 5 is a separate perspective view of FIG. 3.

FIG. 6 is a sectional view of FIG. 2.

FIG. 7 is a separate sectional view of FIG. 6.

FIG. 8 is a sectional view showing main components in a shoe having a rotating function according to a second embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

Hereinafter, an explanation on embodiments of the present invention will be in detail given with reference to attached drawings so that they may be carried out easily by a person skilled in the art. The present invention may be modified in various ways and may have several exemplary embodiments, but the present invention is not limited within specific embodiments. Portions of drawings not related to the explanation of the embodiments of the present invention are removed from the drawings, and in the description, the corresponding parts in the embodiments of the present invention are indicated by corresponding reference numerals.

In the description, when it is said that one portion is described as “includes” any component, one element further may include other components unless no specific description is suggested.

First, a first embodiment of the present invention will be explained.

FIG. 1 is a perspective view showing a shoe having a rotating function according to a first embodiment of the present invention, FIG. 2 is a perspective view showing the shoe of FIG. 1 from which an upper is removed, FIG. 3 is a perspective view showing the underside of the shoe of FIG. 2, FIG. 4 is a separate perspective view of FIG. 2, FIG. 5 is a separate perspective view of FIG. 3, FIG. 6 is a sectional view of FIG. 2, and FIG. 7 is a separate sectional view of FIG. 6.

As shown, a shoe according to the present invention is configured to have an upper A and a sole B coupled to each other, and especially, the shoe is provided with a rotating part C located at a front side of the sole B in such a manner as to rotate in a clockwise or counterclockwise direction.

The sole B has a fastening hole 100 formed piercedly on the front side thereof in a vertical direction thereof, a flange-seating recess 110 formed on the top surface corresponding to the fastening hole 100, and a bearing upper portion-seating groove 120 formed on the underside corresponding to the fastening hole 100.

The flange-seating recess 110 formed on the top surface of the sole B is not circular so that it can prevent a flange 211 of a support shaft 210 as will be discussed later from rotating.

Like this, the rotating part C is coupled to the fastening hole 100 of the sole B.

The rotating part C includes the support shaft 210, a bearing assembly 220, a rotating plate 230, a coupling shaft 240, a coupling bolt 250, and a first slip-preventing member 260.

The support shaft 210 includes the flange 211 contactedly inserted into the flange-seating recess 110 formed on the top surface of the sole B, a through column 212 extended downwardly from the flange 211 to pass through the fastening hole 100, a rotation-preventing groove 213 concavedly formed upwardly from the bottom end of the through column 212, and a female screw hole 214 formed on top of the rotation-preventing groove 213 in a vertical direction.

According to the first embodiment of the present invention, the female screw hole 214 is formed by a metal nut 215 coupled to the support shaft 210 by means of insert molding.

Like this, if the support shaft 210 is coupled to the sole B, the through column 212 of the support shaft 210 protrudes downwardly from the sole B.

The bearing upper portion-seating groove 120 is formed on the underside of the sole B where the fastening hole 100 is formed, and the bearing assembly 220 is located on the bearing upper portion-seating groove 120, while being disposed coaxially to the support shaft 210.

According to the first embodiment of the present invention, the bearing assembly 220 includes an upper wheel 221, a lower wheel 222, and a ball-retainer coupling body 223. The upper wheel 221 is seated onto the bearing upper portion-seating groove 120 of the sole B.

The upper wheel 221 takes a shape of a circular loop and has a race surface R formed on the underside thereof in such a manner as to come into contact with a plurality of balls of the ball-retainer coupling body 223.

The ball-retainer coupling body 223 is located between the upper wheel 221 and the lower wheel 222 and is configured to have the balls coupled to a retainer.

The lower wheel 222 is seated onto a bearing lower portion-seating groove 232 of the rotating plate 230 as will be discussed later and is coupled to the ball-retainer coupling body 223, so that it can rotate with respect to the upper wheel 221 fixed to the sole B. Also, the lower wheel 222 takes a shape of a circular loop and has a race surface R formed on the top thereof in such a manner as to come into contact with the plurality of balls of the ball-retainer coupling body 223.

The rotating plate 230 is a disk-shaped member that is desirably made of a hard synthetic resin. The rotating plate 230 has a shaft hole 231 formed on the center thereof in a vertical direction and the bearing lower portion-seating groove 232 formed on the top surface thereof to seat the lower end periphery of the bearing assembly 220, in more detail, the lower wheel 222 thereonto.

The bearing lower portion-seating groove 232 has a larger diameter than the shaft hole 231.

Moreover, the rotating plate 230 has a protection projection 233 protruding upwardly from the top surface thereof, and the protection projection 233 takes a shape of a ring along the outer periphery of the bearing lower portion-seating groove 232. The protection projection 233 serves to prevent the bearing assembly 220 located in the bearing lower portion-seating groove 232 from being seen to the outside and further prevent external foreign matters from entering the bearing assembly 220.

Furthermore, the rotating plate 230 has protrusion insertion grooves 234 formed concentrically on the top surface thereof. According to the first embodiment of the present invention, two protrusion insertion grooves 234 are formed concentrically.

So as to prevent the deviation of the rotating plate 230, the coupling shaft 240 is provided.

The coupling shaft 240 includes a rotation-preventing column 242 inserted into the rotation-preventing groove 213 to prevent rotation thereof, a shaft column 243 located on the underside of the rotation-preventing column 242 in such a manner as to be disposed in the shaft hole 231 of the rotating plate 230, and a support projection 244 protruding radially from the underside of the shaft column 243 to support the underside of the rotating plate 230.

Further, the coupling shaft 240 has a screw through hole 241 formed at the center thereof in a vertical direction and a bolt head-seating portion 241 a formed on the bottom of the screw through hole 241.

The coupling shaft 240 is configured to have the rotation-preventing column 240 coupled to the rotation-preventing groove 213, and their coupling prevents the coupling shaft 240 from rotating with respect to the support shaft 210.

On the other hand, the coupling shaft 240 is fixedly coupled to the support shaft 210 by means of the coupling bolt 250 to support the rotating plate 230 thereagainst, so that the rotating plate 230 can rotate stably.

The coupling bolt 250 includes a male screw body 251 screw-coupled to the female screw hole 214 after passing through the screw through hole 241 and a bolt head 252 seated onto the bolt head-seating portion 241 a to support the underside of the coupling shaft 240 thereagainst.

The coupling bolt 250 supports the coupling shaft 240 whose rotation prevented by the support shaft 210, so that it can be prevented from loosening.

The first slip-preventing member 260 is coupledly bonded to the underside of the rotating plate 230.

The first slip-preventing member 260 comes into contact with the ground to form the underside surface of the rotating part C, and the first slip-preventing member 260 is made of a rubber material as a general outsole material.

On the other hand, the first slip-preventing member 260 has a coupling shaft-accommodating groove 261 formed on the top surface thereof, and the support projection 244 of the coupling shaft 240 is located in the coupling shaft-accommodating groove 261.

On the other hand, a second slip-preventing member 270 is disposed on the front side of the underside of the sole B. The second slip-preventing member 270 prevents the shoe from slipping against the ground upon a jumping step of the shoe.

The second slip-preventing member 270 includes a plurality of rotation-preventing protrusions 271 protruding downwardly therefrom in such a manner as to be insertedly contacted with the top surface of the rotating plate 230, that is, the protrusion-insertion grooves 234 of the rotating plate 230, upon the jumping step in walking operations.

If the rotation-preventing protrusions 271 come into contact with the rotating plate 230, they prevent the rotating plate 230 from rotating.

On the other hand, a third slip-preventing member 280 is disposed on the rear side of the underside of the sole B, that is, on the rear heel of the shoe.

Now, an explanation on the operation of the shoe having a rotating function according to the first embodiment of the present invention will be given.

According to the first embodiment of the present invention, the rotating plate 230 does not rotate upon the landing and jumping steps in the walking operations.

Upon the landing step in the walking operations, that is, the third slip-preventing member 280 comes into contact with the ground, so that the rotating plate 230 is not rotatable.

This state is the same as while the wearer is simply standing up.

That is, while the third slip-preventing member 280 disposed on the rear heel of the shoe is coming into contact with the ground, the rotating plate 230 is not rotatable.

According to the first embodiment of the present invention, upon the jumping step in the walking operations, the rotation-preventing protrusions 271 of the second slip-preventing member 270 come into contact with the top surface of the rotating plate 230, that is, the protrusion-insertion grooves 234, thereby preventing the rotating plate 230 from rotating.

According to the first embodiment of the present invention, on the other hand, in the state where the rotation-preventing protrusions 271 of the second slip-preventing member 270 do not come into contact with the rotating plate 230 after the third slip-preventing member 280 has been separated from the ground, the rotating plate 230 can rotate with respect to the sole B.

That is, the wearer adjusts an inclination in the shoe to somewhat lift up the heel of the shoe, and in this state, the wearer waists his or her body for waist exercise. In more detail, the wearer adjusts his or her steps to fix the rotating plate 230 or to release the fixed state of the rotating plate 230.

Hereinafter, an explanation on a shoe having a rotating function according to a second embodiment of the present invention will be given.

FIG. 8 is a sectional view showing main components in a shoe having a rotating function according to a second embodiment of the present invention.

According to the second embodiment of the present invention, a sole B of the shoe includes a front sole B-1 made of an injection molded material and a rear sole B-2 made of a foam body.

According to the second embodiment of the present invention, the front sole B-1 is made of a plastic injection molded material, thereby needing no support shaft 210 in the first embodiment of the present invention, and the components located on the support shaft 210 are disposed on the front sole B-1.

That is, a rotation-preventing groove 213 is concavedly formed upwardly from the underside of the front side of the front sole B-1, and further, a female screw hole 214 is formed on top of the rotation-preventing groove 213.

In addition, a bearing upper portion-seating groove 120 is formed on the underside of the front sole B-1 around the rotation-preventing groove 213.

Except for such structural changes in the second embodiment of the present invention, the second embodiment of the present invention is nearly the same as the first embodiment of the present invention, and accordingly, the explanation on the second embodiment of the present invention is replaced with that on the first embodiment of the present invention.

The foregoing description of the embodiments of the invention has been presented for the purpose of illustration; it is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Persons skilled in the relevant art can appreciate that many modifications and variations are possible in light of the above teachings. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto. For example, each of the components explained to a single form is distributedly carried out, and in the same manner as above, the components distributed may be carried out to the form of combinations.

The present invention may be modified in various ways and may have several exemplary embodiments. Specific exemplary embodiments of the present invention are illustrated in the drawings and described in detail in the detailed description. However, this does not limit the invention within specific embodiments and it should be understood that the invention covers all the modifications, equivalents, and replacements within the idea and technical scope of the invention.

INDUSTRIAL APPLICABILITY

According to the present invention, the rotating function is applied to the sole of the shoe so that while a user is wearing the shoe, he or she twists his or her body for waist exercise. 

1. A shoe having a rotating function comprising an upper, a sole coupled to the upper, and a rotating part located on a front side of the sole, wherein the sole comprises a fastening hole formed piercedly on the front side thereof in a vertical direction, the rotating part comprises: a support shaft having a flange coming into close contact with a top surface of the sole, a through column extended downwardly from the flange to pass through the fastening hole, a rotation-preventing groove concavedly formed upwardly from the bottom end of the through column, and a female screw hole formed on top of the rotation-preventing groove in a vertical direction thereof; a bearing assembly having a top end periphery supported against the underside of the sole in such a manner as to be disposed coaxially to the through column protruding downwardly from the sole; a rotating plate having a shaft hole formed on the center thereof in a vertical direction and a top surface supported against the underside end periphery of the bearing assembly; a coupling shaft having a screw through hole formed at the center thereof in a vertical direction, a rotation-preventing column inserted into the rotation-preventing groove of the support shaft, a shaft column located on the underside of the rotation-preventing column in such a manner as to be disposed in the shaft hole, and a support projection protruding radially from the underside of the shaft column to support the underside of the rotating plate thereagainst; a coupling bolt having a male screw body screw-coupled to the female screw hole after passing through the screw through hole and a bolt head adapted to support the underside of the coupling shaft thereagainst; and a first slip-preventing member coupled to the underside of the rotating plate in such a manner as to come into contact with the ground, and the sole comprises a second slip-preventing member disposed on the front side of the underside thereof and having a plurality of rotation-preventing protrusions protruding downwardly therefrom in such a manner as to be insertedly contacted with the top surface of the rotating plate to prevent the rotating plate from rotating.
 2. The shoe according to claim 1, wherein the rotating plate has protrusion insertion grooves formed concentrically on the top surface thereof to insert the plurality of rotation-preventing protrusions thereinto.
 3. A shoe having a rotating function comprising an upper, a sole coupled to the upper, and a rotating part located on a front side of the sole, wherein the sole comprises a rotation-preventing groove concavedly formed upwardly from the underside of the front side of the sole and a female screw hole formed on top of the rotation-preventing groove in a vertical direction, the rotating part comprises: a bearing assembly having a top end periphery coming into contact with the underside of the sole in such a manner as to be disposed coaxially to the rotation-preventing groove of the sole; a rotating plate having a shaft hole formed on the center thereof in a vertical direction and a top surface supported against the underside end periphery of the bearing assembly; a coupling shaft having a screw through hole formed at the center thereof in a vertical direction, a rotation-preventing column inserted into the rotation-preventing groove, a shaft column located on the underside of the rotation-preventing column in such a manner as to be disposed in the shaft hole, and a support projection protruding radially from the shaft column to support the underside of the rotating plate thereagainst; a coupling bolt having a male screw body screw-coupled to the female screw hole after passing through the screw through hole and a bolt head adapted to support the underside of the coupling shaft thereagainst; and a first slip-preventing member coupled to the underside of the rotating plate in such a manner as to come into contact with the ground, and the sole comprises a second slip-preventing member disposed on the front side of the underside thereof and having a plurality of rotation-preventing protrusions protruding downwardly therefrom in such a manner as to be insertedly contacted with the top surface of the rotating plate to prevent the rotating plate from rotating.
 4. The shoe according to claim 3, wherein the rotating plate has protrusion insertion grooves formed concentrically on the top surface thereof to insert the plurality of rotation-preventing protrusions thereinto. 